<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>后盾人</title>
    <style>
        body {
            width: 100vw;
            height: 100vh;
            background: #2c3e50;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        main {
            display: flex;
            perspective: 600px;
            border: solid 5px silver;
            /* transform: rotateY(45deg); */
        }

        div {
            margin-right: 100px;
            width: 200px;
            height: 200px;
            background: #f1c40f;
            transform: rotateY(45deg);
        }
    </style>
</head>

<body>
    <main>
        <div></div>
        <div></div>
    </main>
</body>

</html>